The types of polygons are:
- Triangles
- Quadrilaterals
- Pentagon
- Hexagon
- Heptagon
- Octagon
- Nonagon
- Decagon
| Polygon type | Definition & Property | Types |
| (i) Triangle – | A 3-sided polygon whose sum of internal angles always sums to 180 degrees. | Equilateral Triangle – Has 3 equal sides and angles.Isosceles triangle – Has 2 equal sides and angles.Scalene triangle – Has all the 3 unequal sides and angles. |
| (ii) Quadrilateral | A 4-sided polygon with four edges and four vertices.Sum of internal angles is 360 degrees | Square – Has 4 equal sides and vertices which are at right angles.Rectangle – Has equal opposite sides and all angles are at right angles.Parallelogram – has two pairs of parallel sides. The opposite sides & opposite angles are equal in measure.Rhombus – Has all the four sides to be of equal length. However, they do not have its internal angle to be 90 degreesTrapezium – Has one pair of opposite sides to be parallel. |
| (iii) Pentagon | A plane figure with five straight sides and five angles | – |
| (iv) Hexagon | A plane figure with six straight sides and six angles | – |
| (v) Heptagon | A plane figure with seven sides and seven angles | – |
| (vi) Octagon | A plane figure with eight straight sides and eight angles. | – |
| (vii) Nonagon | A plane figure with nine straight sides and nine angles. | – |
| (viii) Decagon | A plane figure with ten straight sides and ten angles. | – |
In the below figure, we can see the different types of polygons.
RELATED POSTS
View all
